effective onadj.对 ... 有效应effectiveadj.有效的；生效的；实际的Effective fractions有效组分effective bandwidth有效带宽,谱带宽度effective stiffness有效劲度effective life time有效寿命effective half life有效半排出期,有效半衰期effective reservoir有效储层effective beamwidth有效波束宽度effectiveness factor效率外推法effective protection有效保护effective flow pitch有效流距